Yah exactly. A scrum master will also say never try to equate points to hours, its a losing game.

But being able to look back in May and say we logged 32% of all development hours on bugs is a very useful metric for me the business owner / dev lead.

(In addition we don't do story points on bugs. I am so far away from the by the book agile thing, I don't even know if this is correct or not anymore).